I was wondering if it were possible to get an iPod adapter for my 2005 745i but after reading this I think I'll just use the little FM transmitter I bought for it for about $60 at Best Buy. The sound is pretty good unless I'm around a lot of power lines then I get some static.

I think BMW would be better off just putting a little audio input in the dash and let us plug in our iPods using the headphone adapter. iPods are so easy to use it's really no big deal changing songs/playlists on them while in the car.